Method and apparatus for encoding and decoding digital...

Details Method and apparatus for encoding and decoding digital... Method and apparatus for encoding and decoding digital...

2007-08-21

2007-08-21

Lugo, David B. (Department: 2611)

Pulse or digital communications

Multilevel

Disparity reduction

C375S353000

Reexamination Certificate

active

10222254

ABSTRACT:
In one aspect, the present invention is a system and technique that provides for the systematic development or implementation of codes that increase the robustness of systems employing, for example, PAM-n transmission techniques. The system and technique of this aspect of the invention eliminate, minimize, reduce or limit transitions between extreme signaling levels. As a result, the slew rate employed and/or required by the transmitter may reduce crosstalk and intersymbol interference, and provide for wider “eye” openings from the perspective of the receiver.

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patent: 6772351 (2004-08-01), Werner et al.
Griffiths, J.M., “Binary Code Suitable For Line Transmission,” Electronics Letters, IEE Stevenage, GB, vol. 5, No. 4, Feb. 20, 1969, pp. 79-81, ISSN: 0013-5194.
D. Pan and J.T. Stonick, “IC-Friendly Line Codes for Direct-Conversion Receivers,” IEEE Radio and Wireless Conference 2000, Sep. 10, 20000-Sep. 13, 2000, pp. 47-50, ISBN: 0-7803-6267-5.
R. Farjad-Rad, C. Yang, M.A. Horowitz and T.H. Lee, “A 0.4-um CMOS 10-Gb/s 4-PAM Pre-Emphasis Serial Link Transmitter,” IEEE Journal of Solid-State Circuits, May 1999, vol. 34, No. 5, pp. 580-585, ISSN: 0018-9200.

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